2007

SH2824 : Mynydd Cilan Triangulation Station

taken 17 years ago, near to Cilan Uchaf, Gwynedd, Wales

Mynydd Cilan Triangulation Station
Mynydd Cilan Triangulation Station
English tourists gather round the Mynydd Cilan trig at 117m above sea level. Hell's Mouth Beach can be seen in the background.

Trig points were a tool to give surveyors a frame of reference for surveying the UK in the days before electronic positioning aids were available (GPS etc). Typically, a trig point is a concrete post set on a high point such as a hill with a metal disc inset in the top which you can put your theodolite in. The trig point is at an accurately surveyed and documented position so you can survey other stuff relative to one or more trig points.
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Creative Commons Licence [Some Rights Reserved]   © Copyright John Harvey and licensed for reuse under this Creative Commons Licence.
This photo is linked from: Automatic Clusters: · Trig Point [6] · Mynydd Cilan Triangulation [2] ·
1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
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1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
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SH2824, 40 images   (more nearby 🔍)
Photographer
John Harvey   (more nearby)
Date Taken
August 2007   (more nearby)
Submitted
Wednesday, 22 August, 2007
Subject Location
OSGB36: geotagged! SH 289 241 [100m precision]
WGS84: 52:47.2804N 4:32.2870W
Camera Location
OSGB36: geotagged! SH 289 240
View Direction
North-northwest (about 337 degrees)
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Image classification(about): Geograph (Third Visitor for SH2824)
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